GCSS96 Installation Manual

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• The vent termination of vent pipe run vertically through
a roof must terminate at least 12 inches above the roof
line (or the anticipated snow level) and be at least 12
inches from any vertical wall (including any anticipated
snow build up).
• A vent termination shall not terminate over public
walkways
or over an area where condensate or vapor could create
a nuisance or hazard or could be detrimental to the
operation of regulators, relief valves, or other
equipment.
• The combustion air intake termination of a direct vent
application should not terminate in an area which is
frequently dusty or dirty.
NOTE: In Canada, the current edition of CAN/CSA B149.1-15
takes precendence over the preceding termination
restriction.
CANADIAN VENT PIPE & COMBUSTION AIR PIPE REQUIRE-
MENTS
All installations in Canada must conform to the requirements
of CAN/CSA B149.1 -15 code. All vent components, including
primer and cement, must be listed to ULC S636. The certi-
fied pipe and fittings should be clearly marked with the ULC
standard “S636”. The primer and cement used must be of
the same manufacturer as the vent system. For Royal Pipe
System 636; use GVS-65 Primer (Purple) and GVS-65 PVC
Solvent Cement. For IPEX System 636, use PVC/CPVC Primer,
Purple or clear. Use PVC Solvent Cement (Gray).
For Canadian installations, ABS may be used as a combus-
tion air pipe only. ABS is not an approved vent material in
Canada. If ABS is used as a combustion air pipe, it must be
CSA certified. Always follow the manufacturer’s instructions
in the use of primer and cement. Do not use primer and
cement around potential sources of ignition. Do not use
primer or cement beyond its expiration date.
The safe operation, as defined by ULC S636, of the vent
system is based on following these installation instructions,
the vent system manufacturer’s installation instructions, and
proper use of primer and cement. It is recommended under
this standard, that the vent system be checked once a year
by qualified service personnel. All fire stops and roof flashings
used with this system must be UL listed. Acceptability under
CAN/CSA B149.1-15 is dependent upon full compliance with
all installation instructions. Consult the authority having
jurisdiction (gas inspection authority, municipal building de-
partment, fire department, etc.) before installation to de-
termine the need to obtain a permit. *IPEX System 636™ is a
trademark of IPEX Inc.
Carefully follow the pipe manufacturers’ instructions for cutting,
cleaning, and solvent cementing PVC and/or ABS.
The vent can be run through an existing unused chimney pro-
vided the space between the vent pipe and the chimney is insu-
lated and closed with a weather-tight, corrosion-resistant flash-
ing.
STANDARD FURNACE CONNECTIONS
It is the responsibility of the installer to ensure that the piping
connections to the furnace are secure, airtight, and adequately
supported.
VENT/FLUE P IPE
The vent pipe outlet is sized to accept 2” pipe. Secure vent/
flue pipe directly into the furnace fitting with the appropri-
ate glue. Alternately, a small section of 2" pipe may be glued
in the furnace socket and a rubber coupling installed to allow
removal for future service. Combustion Air and Vent piping
should be routed in a manner to avoid contact with refriger-
ant lines, metering devices, condensate drain lines, etc. If
necessary, clearances may be increased by creating an off-
set using two 45 degree elbows (Figure 8A).
45 DEGREE
ELBOWS
Increased Clearance Configuration
Figure 8A
This joint can be rotated on the fitting to establish maxi-
mum clearance between refrigerant lines, metering devices,
and condensate drain lines, etc. This joint is the equivalent
of one 90 deg. elbow when considering elbow count.
NOTE: For non-direct vent installations, a minimum of one
90° elbow should be installed on the combustion air intake
coupling to guard against inadvertent blockage.
E DGES OF SHEET METAL HOLES MAY BE SHARP . U SE GLOVES AS A
PRECAUTION WHEN REMOVING HOLE PLUGS .
WARNING
C OMBUSTION A IR P IPE
DIRECT V ENT I NSTALLATIONS
On upflow units secure the combustion air intake pipe to the air
intake coupling by using a take apart rubber coupling supplied
with the furnace or a plastic coupling. Also, the intake cou-
pling may be inverted to allow the intake pipe to be glued
directly to it. After inverting the coupling, secure it to the
furnace top with screws. On counterflow units secure the com-
bustion air intake pipe to the air intake coupling using the rubber
coupling and worm gear hose clamps provided with the unit. The